I have an autographed little league baseball when I played back in 1968.It was signed by:Mickey MantleDick WilliamsRico PetrocelliMike AndrewsReggie SmithBobbie Doerr(?)Jim Lornborg(?)Where can I go to have it appraised?
Contact PSA DNA, this the recognized authority on sports autographs. Here is a link
Ask for a certification on Mantle. Otherwise they will charge you for each autograph.